- How are keloids formed ?
- Normally when there is a wound on the skin due to trauma or infection, it
heals with scarring. If the scar tissue continues to grow beyond the margins
of the original wound, it forms a keloid.
- What is a keloid ?
- A keloid is a firm to hard, irregularly shaped, thickened overgrowth with
claw like projections. It may be asymptomatic or painful, tender and pruritic
- Is there a known cause ?
- It occurs only in people who are predisposed to it, i.e. have a tendency to
Triggering factors are:
- Trauma which may be due to a needle prick, vaccination, cut
with a knife, insect bite etc.
- Infections like furuncle, abscess, cystic acne etc.
- Burns and scalds.
- How can keloids be treated ?
- In the past, modalities like surgical excision and primary suturing,
excision and skin grafting have been tried but almost always the keloid
Cryosurgery with liquid nitrogen
followed by intralesional therapy with a
combination of steroid & 5 flurouracil
has been found to produce very good results. It arrests the growth of the keloid and flattens it. A tailored silastic gel sheet along with a pressure
garment has shown to augment the benefits of the above treatment.
The number of sessions of cryotherapy is determined by the thickness of
the lesion and the response to the treatment.
Laser ablation with a Co2
Laser or radiosurgery is an alternative to cryotherapy.It could be
combined with interferon injections,silastic gel sheet& pressure garment to
achieve better results.
- Multiple treatments with pulse dye laser is a fast
emerging modality of treatment with promising results.
- What are the advantages of cryotherapy for keloid ?
- It is an office procedure and hospitalization is not required.
- Multiple lesions can be treated at the same time.
- What are the problems that one comes across in
cryotherapy for keloid ?
- More than one cycle is required depending on the thickness of the
- A regular and long term follow up with the treating dermatosurgeon
is mandatory for the best result.
- There may be permanent hypo-pigmentation or depigmentation.